Guys I had the same problem with dicalcium phosphate. I live in Tampa Florida and they have never heard of the stuff. Well I started calling every feed store and feed store supplier till I finally found it. Had to drive a half hour but I have it now.

The only part I am now missing is the rock salt. Where can you get that? I went to sams club and found salt but it is what they put in water softners. Is that the same stuff? It is says 99% natual salt and it looks like chunks of rocks. Anybody????